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HAMR HDD Shock Responses

[+] Author Affiliations
Lidu Huang, Fu-Ying Huang, Toshiki Hirano, Barry Stipe

HGST, a Western Digital Company, San Jose, CA

Kenzi Suzuki

HGST Japan Ltd., Fujisawa, Kanagawa, Japan

Paper No. ISPS2013-2896, pp. V001T02A003; 3 pages
doi:10.1115/ISPS2013-2896
From:
  • ASME 2013 Conference on Information Storage and Processing Systems
  • ASME 2013 Conference on Information Storage and Processing Systems
  • Santa Clara, California, USA, June 24–25, 2013
  • Conference Sponsors: Information Storage and Processing Systems Division
  • ISBN: 978-0-7918-5553-9
  • Copyright © 2013 by ASME

abstract

Heat assisted magnetic recording (HAMR) and slim mobile hard disk drives (HDD) are being developed parallelly to maintain cost advantage over the solid state drive (SSD). Operational shock and non-operational shock capabilities are seriously challenged for the slim HDDs due to reduced stiffness (thickness). It is worse for slim HAMR drives due to additional laser diode (LD) and other necessities being added on slider. Shock tests are part of the key performance matrices that must be passed in HDD reliability tests, and the concerns for HAMR mobile drives are, 1) slider lift-off G-level degradation during op-shock, and 2) LD back-to-back hitting during non-operational shock. We studied a few potential HAMR HGA designs, also analyzed a design that improves drive op-shock performances.

Copyright © 2013 by ASME

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